Home / 15,999.09-22,078.68-9,629.37

Finding the Fourth Proportional to 15,999.09, 22,078.68 and 9,629.37

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Solution

The fourth proportional to 15,999.09, 22,078.68 and 9,629.37 is: 13,288.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,999.09 : 22,078.68 = 9,629.37 : x
  2. Step 2: Convert to fraction form
    15,999.09/22,078.68 = 9,629.37/x
  3. Step 3: Cross multiply
    15,999.09x = 22,078.68 × 9,629.37
  4. Step 4: Simplify right side
    15,999.09x = 212,603,778.83
  5. Step 5: Solve for x
    x = 212,603,778.83/15,999.09
  6. Step 6: Final answer
    x = 13,288.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.